diff --git a/installpkg b/installpkg
index ed5e154..77397d8 100755
--- a/installpkg
+++ b/installpkg
@@ -378,7 +378,9 @@ main() {
 	
 	parse_opts $(extract_opt $@)
 	
-	BASEPKGNAME=$(basename $PKGNAME)
+	if [ -n "$PKGNAME" ]; then
+		BASEPKGNAME=$(basename $PKGNAME)
+	fi
 		
 	# disable colour
 	if [ "$NOCOLOR" ]; then
diff --git a/scratch b/scratch
index a8712f0..fd79d34 100755
--- a/scratch
+++ b/scratch
@@ -991,6 +991,12 @@ if [ "$mode" = "deplist" ]; then
 	exit 0
 fi
 	
+# print help message
+if [ "$mode" = "help" ]; then
+	help
+	exit 0
+fi
+	
 # list installed package in system
 if [ "$mode" = "listinst" ]; then
 	listinstalled